[Sidefx-houdini-list] noob procedural animation

François Duchesneau sidefx at trinix.ca
Sun Feb 7 15:07:14 EST 2016

Hi Gary,

It's a bit hard to know what you're missing but make sure you read 
enough on stamping, groups, attribute manipulation like promoting and 
all the different attribute xyz nodes in sop.

When I started to learn Houdini for the first time (I'm still learning 
everyday) there weren't much tutorials around apart from a pdf on 
L-system and few others. However I've learned most of the foundation by 
looking at the example files that come with most of the nodes.

For example, make sure you've been through a few of them on the Copy Sop 

This is a right place for asking questions. I myself prefer the mailing 
list however keep in mind there's no way to add attachments here.



On 02/07/2016 12:43 PM, Gary Jaeger wrote:
> OK, I’ve been going through the docs and vimeo vids to start to get up to speed in houdini. Good stuff. I thought I’d give myself a little procedural test to see if I actually understood some basic concepts - and I failed. Here is the simplified maya version of what I was trying to do:
> https://www.dropbox.com/s/e0vj28oin3lpbke/maya_proc.mov?dl=0
> But what I really wanted was to make myself a little tool with sliders to control:
> random scalex of the cross sections of the pipes
> experiment with number of pipes
> experiment with direction and speed of the pipe revolve
> experiment with timing of the pipe’s rotations into place
> I don’t necessarily want individual control of each element. Rather overall speeds with variance.
> I got as far as creating a plane, copying (or duplicating? Which is better in this case?) and revolving them. But I couldn’t figure out the random parts (I tried attribute randomize but it didn’t work). Also my revolves ended up being a single group that I couldn’t see how to rotate individually.
> Anyway, I know I could build this just like I did in maya, with basically all individual elements. But I figured there had to be a clean, elegant way in houdini. Any tips to lead me down the right path?
> Thanks.
> (by the way, is this best place or should I be in the sidefx forums? I prefer mailing lists but not really sure where the party’s at)
> Gary Jaeger // Core Studio
> 249 Princeton Avenue
> Half Moon Bay, CA 94019
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